– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 3 pm Thu 19 Feb Local TimeUpdates in: hr min sUpdate imminent
Issued: 3 pm Thu 19 Feb Local Time
Updates in:
Update imminent hr min s
Issued: 3 pm Thu 19 Feb Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryA dusting of snow turning to light rain (total 2mm) on Sat night. Freeze-thaw conditions (max 5°C on Sat afternoon, min -5°C on Thu night). Wind will be generally light. | Days 5–7 Weather SummaryHeavy rain (total 58mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Tue night. Mild temperatures (max 6°C on Mon night, min 2°C on Sun night). Wind will be generally light. | ||||||||||||||||
Thu 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  |  |  | |  | |  |  | |  |  | |  | | |
clear | some clouds | some clouds | cloudy | cloudy | light rain | cloudy | light snow | light rain | rain shwrs | light rain | light rain | mod. rain | heavy rain | light rain | heavy rain | light snow | |
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 2 | |
— | — | — | — | — | 0.1 | — | 1.2 | 1.2 | 3 | 3 | 1 | 6 | 14 | 1.8 | 14 | 13 | |
max °C | -1 | -4 | 1 | 1 | 1 | 4 | 5 | 3 | 5 | 4 | 4 | 4 | 5 | 6 | 4 | 3 | 2 |
min °C | -4 | -5 | -1 | -1 | -1 | 3 | 2 | 2 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 2 | 2 |
-4 | -5 | -3 | -3 | -3 | 1 | 0 | -1 | 1 | 2 | 0 | 2 | 2 | 0 | 0 | -2 | -2 | |
400 | 0 | 350 | 600 | 450 | 1250 | 1350 | 1550 | 1550 | 1250 | 1100 | 1150 | 1550 | 1750 | 1000 | 950 | 800 | |
Cloud base (m) | 700 | 600 | 650 | 600 | 2250 | 2350 | 2150 | 600 | 1950 | 750 | 600 | 850 | 650 | 550 | 600 | 600 | 600 |
 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — |
 | 5:35 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:42 | — | — | 5:43 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: A dusting of snow turning to light rain (total 2mm) on Sat night. Freeze-thaw conditions (max 5°C on Sat afternoon, min -5°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 58mm), heaviest during Tue afternoon. Later becoming colder with a dusting of snow on Tue night. Mild temperatures (max 6°C on Mon night, min 2°C on Sun night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.